RN122-2-02

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Common mode chokes are an indispensable device for interfering with high-frequency noise in power electronics circuits. The RN122-2-02 is a common mode choke that uses ferrite cores to limit common-mode voltages and circulating currents between two conductors in a circuit. In this article, we will explore the application field and working principles of the RN122-2-02.

Application Field of RN122-2-02

The RN122-2-02 is commonly used in a wide variety of applications. One of the primary uses of the device is as an EMC filter for DC/DC power converters. The device is particularly suitable for the isolation of noisy low-frequency signals from the primary power supply as well as the isolation of control signals from the power side. In addition, the RN122-2-02 can be used in signal line filtering, including data buses and communication lines. It can also be used in the filtering of digital circuits, ensuring proper operation and preventing system malfunctions.

Working Principle of RN122-2-02

The RN122-2-02 is composed of two coupled inductors that are wound in opposite directions. The device works by disrupting the unwanted, high-frequency noise that is present in the circuit. This noise is induced onto a transformer core by the two windings, which then goes through a core saturation process. The core saturation causes the high-frequency noise to be attenuated, thus eliminating the signal interference. The attenuation of the signal is controlled by the number of turns of the windings and the saturation level of the ferrite core. In addition, the RN122-2-02 also has a high impedance at the coil terminals, which acts as a barrier preventing the noise signal from passing through.

Conclusion

The RN122-2-02 was designed to limit common-mode voltages and circulating currents between two conductors in a circuit. It is commonly used for signal and power line filtering, and to filter low-frequency signals on the power side. The device works by disrupting unwanted, high-frequency noise in the circuit using two coupled inductors wound in opposite directions. The core saturation process then causes the high-frequency noise to be attenuated. These features make the RN122-2-02 an ideal common mode choke for use in a wide range of applications.

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